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sensors Mode-S transponder

7812E2

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-1399 · BOEING 737 MAX 8

Hex
7812E2
Octal
36011342
Decimal
7,869,154
Country
CN
Tail
B-1399
Type
B38M
Broadcasting now · callsign CCA822 · 33,000 ft
Flights observed
205
Distinct callsigns
20
Country
CN
Last broadcast
2d ago

Current position

7812E2 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 7812E2 falls within the block assigned to China (CN) by ICAO Annex 10, Volume III. Every aircraft registered in China receives a permanent address from this block at the time of registration; the address stays with the airframe even if the aircraft is re-registered to a different operator within the country.

Callsign history 20 distinct

Callsign Airline Flights Last seen
CCA871 Air China 12 2026-07-21
CCA902 Air China 10 2026-07-24
CCA821 Air China 10 2026-07-20
CCA1491 Air China 9 2026-07-22
CCA960 - 8 2026-07-11
CCA901 Air China 8 2026-07-24
CCA959 - 7 2026-07-11
CCA872 - 7 2026-07-21
CCA702 Air China 6 2026-07-25
CCA117 Air China 6 2026-07-26
CCA792 Air China 4 2026-06-10
CCA723 - 4 2026-07-06
CCA701 Air China 4 2026-07-25
CCA1207 - 4 2026-07-01
CCA822 Air China 3 2026-06-14
CCA800 - 3 2026-07-03
CCA799 - 3 2026-07-03
CCA782 Air China 3 2026-06-16
CCA724 - 3 2026-07-06
CCA551 Air China 3 2026-05-06

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CCA117 PEK → HKG Jul 26, 14:10 UTCJul 26, 14:40 UTC30m
2026-07-26 CCA117 PEK → HKG Jul 26, 11:45 UTCJul 26, 11:55 UTC10m
2026-07-26 CCA1216 KHG → PEK Jul 26, 09:30 UTCJul 26, 09:45 UTC15m
2026-07-25 CCA1215 PEK → KHG Jul 25, 23:05 UTCJul 25, 23:20 UTC15m
2026-07-25 CCA702 DAC → PEK Jul 25, 20:45 UTCJul 25, 21:05 UTC20m
2026-07-25 CCA702 DAC → PEK Jul 25, 16:35 UTCJul 25, 17:40 UTC1h 5m
2026-07-25 CCA701 PEK → DAC Jul 25, 09:55 UTCJul 25, 14:20 UTC4h 25m
2026-07-25 CCA1242 AAT → PEK Jul 25, 07:15 UTCJul 25, 07:35 UTC20m
2026-07-24 CCA1241 PEK → AAT Jul 24, 22:50 UTCJul 24, 23:10 UTC20m
2026-07-24 CCA1256 - Jul 24, 17:10 UTCJul 24, 17:25 UTC15m
2026-07-24 CCA1255 - Jul 24, 08:00 UTCJul 24, 08:15 UTC15m
2026-07-24 CCA902 UBN → PEK Jul 24, 05:25 UTCJul 24, 05:40 UTC15m
2026-07-24 CCA901 PEK → UBN Jul 24, 01:00 UTCJul 24, 01:10 UTC10m
2026-07-23 CCA778 - Jul 23, 21:00 UTCJul 23, 21:20 UTC20m
2026-07-23 CCA777 - Jul 23, 08:10 UTCJul 23, 08:35 UTC25m
2026-07-23 CCA108 HKG → PEK Jul 23, 03:00 UTCJul 23, 03:10 UTC10m
2026-07-22 CCA107 - Jul 22, 11:10 UTCJul 22, 14:30 UTC3h 20m
2026-07-22 CCA1491 PEK → WMT Jul 22, 01:50 UTCJul 22, 02:10 UTC20m
2026-07-21 CCA872 - Jul 21, 17:10 UTCJul 21, 20:40 UTC3h 30m
2026-07-21 CCA871 PEK → KUL Jul 21, 14:30 UTCJul 21, 14:55 UTC25m
2026-07-21 CCA871 PEK → KUL Jul 21, 11:30 UTCJul 21, 11:45 UTC15m
2026-07-21 CCA871 PEK → KUL Jul 21, 08:55 UTCJul 21, 09:10 UTC15m
2026-07-21 CCA1404 KMG → PEK Jul 21, 06:10 UTCJul 21, 06:35 UTC25m
2026-07-20 CCA1403 PEK → KMG Jul 20, 23:00 UTCJul 20, 23:25 UTC25m
2026-07-20 CCA821 PEK → HKT Jul 20, 05:10 UTCJul 20, 15:00 UTC9h 50m
2026-07-19 CCA1349 PEK → CSX Jul 19, 12:40 UTCJul 19, 12:55 UTC15m
2026-07-19 CCA1438 - Jul 19, 10:25 UTCJul 19, 10:35 UTC10m
2026-07-19 CCA4132 PEK → CKG Jul 19, 05:15 UTCJul 19, 05:30 UTC15m
2026-07-19 CCA1350 CSX → PEK Jul 19, 02:55 UTCJul 19, 03:05 UTC10m
2026-07-18 CCA1349 PEK → CSX Jul 18, 12:45 UTCJul 18, 13:00 UTC15m
2026-07-17 CCA1256 - Jul 17, 17:05 UTCJul 17, 17:20 UTC15m
2026-07-17 CCA1255 - Jul 17, 08:04 UTCJul 17, 08:20 UTC15m
2026-07-16 CCA714 - Jul 16, 20:15 UTCJul 17, 05:04 UTC8h 50m
2026-07-16 CCA713 - Jul 16, 12:44 UTCJul 16, 13:25 UTC40m
2026-07-15 CCA1295 - Jul 15, 14:55 UTCJul 15, 15:05 UTC10m
2026-07-15 CCA1960 HAK → PEK Jul 15, 11:45 UTCJul 15, 11:55 UTC10m
2026-07-15 CCA1959 - Jul 15, 02:30 UTCJul 15, 02:50 UTC20m
2026-07-14 CCA9750 - Jul 14, 13:00 UTCJul 14, 13:20 UTC20m
2026-07-13 CCA821 - Jul 13, 05:15 UTCJul 13, 15:20 UTC10h 5m
2026-07-13 CCA1545 - Jul 13, 00:35 UTCJul 13, 00:45 UTC10m
2026-07-12 CCA702 - Jul 12, 16:30 UTCJul 12, 17:40 UTC1h 10m
2026-07-12 CCA701 - Jul 12, 09:35 UTCJul 12, 14:05 UTC4h 30m
2026-07-12 CCA1491 - Jul 12, 00:35 UTCJul 12, 00:55 UTC20m
2026-07-11 CCA960 - Jul 11, 18:10 UTCJul 11, 18:20 UTC10m
2026-07-11 CCA960 - Jul 11, 14:00 UTCJul 11, 17:00 UTC3h 0m
2026-07-11 CCA960 - Jul 11, 12:40 UTCJul 11, 12:55 UTC15m
2026-07-11 CCA959 - Jul 11, 10:25 UTCJul 11, 10:40 UTC15m
2026-07-11 CCA959 - Jul 11, 06:15 UTCJul 11, 09:20 UTC3h 5m
2026-07-11 CCA9614 - Jul 11, 03:40 UTCJul 11, 04:01 UTC20m
2026-07-10 CCA9613 - Jul 10, 22:50 UTCJul 10, 23:15 UTC25m

About Mode-S

A Mode-S transponder code (also called an "ICAO 24-bit address" or "hex code") is a 6-character hexadecimal identifier permanently assigned to an aircraft when it's first registered. Unlike callsigns (which change with each flight) or registrations (which can change if an aircraft is sold internationally), the Mode-S address stays with the airframe for the life of the aircraft in that country.

Every ADS-B transmission from an aircraft includes its Mode-S address, making it the most reliable way to identify a specific airframe. Flight-tracking services like Apparatus use the Mode-S address as the primary key for tying position broadcasts, callsigns, and ownership records together.

Prefer a tail-number view? See the B-1399 page for operator, model, and routing details .

Mode-S 7812E2 frequently asked

What is Mode-S code 7812E2?
7812E2 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-1399.
Where is Mode-S 7812E2 registered?
Mode-S code 7812E2 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7812E2 broadcasting right now?
Yes. Mode-S 7812E2 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7812E2, octal 36011342, decimal 7,869,154.
What flights does 7812E2 operate?
Mode-S 7812E2 has broadcast 20 distinct callsigns, including CCA871, CCA902, CCA821, CCA1491, CCA960.